Vibrational transition probabilities for the CO molecule trapped in an argon cluster: a semiclassical simulation

We calculate the 0→1, 1→0, 1→2, 2→1, and 2→3 vibrational transition probabilities of the CO molecule trapped in the center of icosahedral argon clusters with 12, 54, and 146 Ar atoms at various cluster temperatures. The semiclassical scheme has been employed, where the impurity vibrations are quantized while all the other degrees of freedom are treated classically. The transition probabilities increase with the cluster size but exhibit an inverse temperature dependence.